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What number comes next?

What number comes next in the series? (283, 5177, 1131515, ...)

Correct answers: 51

The first user who solved this task is Linda Tate Young.

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At the doctor's office, Tom wa...

At the doctor's office, Tom was getting a check up. "I have good news and bad news," says the doctor. "The good news is you have 24 hours left to live." Tom replies, "That's the good news?!" Then the doctor says, "The bad news is I should have told you that yesterday."

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Walter Noddack

Died 7 Dec 1960 at age 67 (born 17 Aug 1893).Walter Karl Friedrich Noddack was a German chemist who discovered the element rhenium (Jun 1925) in collaboration with his wife Ida Tacke. In 1922, he began a long search for undiscovered elements. After three years, the careful fractionation of certain ores yielded element 75, a rare heavy metallic element that resembles manganese. Named rhenium after the Rhine River, it was the last stable element to be discovered. Noddack is also remembered for arguing for a concept he called allgegenwartskonzentration or, literally, omnipresent concentration. This idea, reminiscent of Greek philosopher Anaxagoras, assumed that every mineral actually contained every element. The reason they could not all be detected was they existed in too small quantities.

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